what is the use of “unloader “on main air compressor ?
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如果税收减少对总需求的增加超过总供给,实际GDP________,同时价格水平一—。
A. 增加;上升
B. 增加;下降
C. 减少;上升
D. 减少;下降
E. 增加;不变
During the PSC inspection, under the provisions of SOLAS 74, which one be regarded as clear grounds for ships' detainment?
A. failure of proper operation of propulsion
B. paint peeling off the uptake
C. no operation procedures for file oil separators
D. damaged sanitary pump
确定潜在GDP是不容易的?为什么这样一个事实会影响相机抉择的财政政策的使用?
What is the most advantage of the lean-combustion different from the routine combustion?
A. Continue running
B. Well combustion
C. Higher peak temperature
D. Lower holding time of Maximum temperature